Measurement of the inclusive J/psi polarization at forward rapidity in pp collisions at root s=8 TeV

doi:10.1140/epjc/s10052-018-6027-2

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	Measurement of the inclusive J/psi polarization at forward rapidity in pp collisions at root s=8 TeV
	Acharya, S ; Acosta, FT ; Adamova, D ; Adolfsson, J ; Aggarwal, MM ; Rinella, GA ; Agnello, M ; Agrawal, N ; Ahammed, Z ; Ahn, SU
刊名	EUROPEAN PHYSICAL JOURNAL C
	2018
卷号	78 期号:7 页码:-
关键词	QUARKONIUM PRODUCTION
ISSN号	1434-6044
DOI	10.1140/epjc/s10052-018-6027-2
文献子类	期刊论文
英文摘要	We report on the measurement of the inclusive J/psi polarization parameters in pp collisions at a center of mass energy root s = 8 TeV with the ALICE detector at the LHC. The analysis is based on a data sample corresponding to an integrated luminosity of 1.23 pb(-1) J/psi resonances are reconstructed in their di-muon decay channel in the rapidity interval 2.5 < y < 4.0 and over the transverse-momentum interval 2 < pT < 15 GeV/c. The three polarization parameters (lambda(theta), lambda(phi), lambda(theta phi)) are measured as a function of pT both in the helicity and Collins-Soper reference frames. The measured J/psi polarization parameters are found to be compatible with zero within uncertainties, contrary to expectations from all available predictions. The results are compared with the measurement in pp collisions at root s = 7 TeV.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/31025]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
作者单位	1.Inst Phys, Bhubaneswar, India 2.Alikhanyan Natl Sci Lab, Yerevan Phys Inst Fdn, Yerevan, Armenia 3.Benemerita Univ Autonoma Puebla, Puebla, Mexico 4.Natl Acad Sci Ukraine, Bogolyubov Inst Theoret Phys, Kiev, Ukraine 5.Bose Inst, Dept Phys, Kolkata, India 6.Bose Inst, CAPSS, Kolkata, India 7.Budker Inst Nucl Phys, Novosibirsk, Russia 8.Calif Polytechn State Univ, San Luis Obispo, CA USA 9.Cent China Normal Univ, Wuhan, Peoples R China 10.Ctr Calcul IN2P3, Villeurbanne, France
推荐引用方式 GB/T 7714	Acharya, S,Acosta, FT,Adamova, D,et al. Measurement of the inclusive J/psi polarization at forward rapidity in pp collisions at root s=8 TeV[J]. EUROPEAN PHYSICAL JOURNAL C,2018,78(7):-.
APA	Acharya, S.,Acosta, FT.,Adamova, D.,Adolfsson, J.,Aggarwal, MM.,...&Zou, S.(2018).Measurement of the inclusive J/psi polarization at forward rapidity in pp collisions at root s=8 TeV.EUROPEAN PHYSICAL JOURNAL C,78(7),-.
MLA	Acharya, S,et al."Measurement of the inclusive J/psi polarization at forward rapidity in pp collisions at root s=8 TeV".EUROPEAN PHYSICAL JOURNAL C 78.7(2018):-.